diff --git a/js/package-lock.json b/js/package-lock.json
index 3fa41bc49..7bc732533 100644
--- a/js/package-lock.json
+++ b/js/package-lock.json
@@ -3816,6 +3816,11 @@
       "resolved": "https://registry.npmjs.org/mithril/-/mithril-2.0.4.tgz",
       "integrity": "sha512-mgw+DMZlhMS4PpprF6dl7ZoeZq5GGcAuWnrg5e12MvaGauc4jzWsDZtVGRCktsiQczOEUr2K5teKbE5k44RlOg=="
     },
+    "mithril-stream": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/mithril-stream/-/mithril-stream-2.0.0.tgz",
+      "integrity": "sha512-7anPud4n2FMGIXBQATVpFzclkddXHmJ1TzlqOP9STybk8JZYOPAD2otMYiMDc6sPrTNDY5S6GPDlYNIUY8Qs3Q=="
+    },
     "mixin-deep": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.2.tgz",
diff --git a/js/package.json b/js/package.json
index 4b7534524..bb62d0880 100644
--- a/js/package.json
+++ b/js/package.json
@@ -15,6 +15,7 @@
     "lodash-es": "^4.17.14",
     "m.attrs.bidi": "github:tobscure/m.attrs.bidi",
     "mithril": "^2.0.4",
+    "mithril-stream": "^2.0.0",
     "punycode": "^2.1.1",
     "spin.js": "^3.1.0",
     "webpack": "^4.43.0",